> ## Documentation Index
> Fetch the complete documentation index at: https://docs.upstackdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# trial_extended Event

> Track when a trial period is extended.

Fires when a trial period is extended. Use this event to track trial extensions and measure their impact on conversion.

## JavaScript

```javascript theme={null}
window._upstack('track', 'trial_extended', {
  accountId: 'acct_abc123',
  trialEndDate: '2026-03-11T14:30:00.000Z',
  trialDaysRemaining: 7,
  extensionReason: 'support_request'
});
```

## Properties

| Property           | Type   | Required | Description            |
| ------------------ | ------ | -------- | ---------------------- |
| accountId          | string | Yes      | Account identifier     |
| trialEndDate       | string | No       | New trial end date     |
| trialDaysRemaining | number | No       | New days remaining     |
| extensionReason    | string | No       | Why trial was extended |

## When to Fire

* After support manually extends trial
* After promotional extension is applied
* After win-back campaign grants extension